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Occurrence of shale soils along the Calabar-Itu highway, Southeastern Nigeria and their implication for the subgrade construction

Crossref DOI link: https://doi.org/10.1186/s40064-016-1822-4

Published Online: 2016-02-29

Published Print: 2016-12

Update policy: https://doi.org/10.1007/springer_crossmark_policy